1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610cade8b191f48abb4181090d4144df903fe668a17118e4bcfad2667b52a34f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c792ff8e-3300-4ab1-b586-1dd4723dc572.json and https://artists.proofprofile.net/proofs/artist/c792ff8e-3300-4ab1-b586-1dd4723dc572.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce462c4b8f4b7c52cbd5b02627cd8e8ede186798bddf8c530a8517c7ce1c79b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3ZJ0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4fc92216bf1ab28f03efe36bf738b0ecce9c0157d708f5bf0ffbb748571beb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2850913903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1a0d8545a763b0a056c2c0198dfcaf1c70cd3d6f5e476a4c0da3bfdcd5c9a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2850913904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf6859da64d6f34c5254b933aec56929d7d1dfb56e704cdaf01e0d2a2a369dd. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2850913908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbebe4c9fa48a5b29729e3d4a17280dd3c7889a8062d80fd4d481473d629b162. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2850913910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d5818777f276fb476ce9afeec0fdf1d5a46fdab657e1962dbeb1777f663a8d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:27:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2850913911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67544b794d140756c221384ffa7ac5df50bf2bcc925ae48c4ed91158865b0a64. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deca4eefbc07201ccd56c43b8565ffed253e66d841a09f3b322288331cc3cd3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a96ad9cbd357d4f44d7776ad50aee1bd742191903009eee5cfd1d0dff43b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db4f9bd281a99440c3372eefb56f2096deca53ce2063a918ce095d14686fff. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1dab6b95488351a27300e40e6367390426b7f100aacb07d78fcdc950442eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c88ee7fc86e4e7c7307a8e04f9851d1b8e69ba8ac1c4066471fed6d7fc2a611. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f2051a2d97417acbc20bc758f8e36f05e854a6822d3f9f5b9714af5890107. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf1d42b9d415e44e848836e3df4e1f0315a73d330ad3f8d159ad633e3920aaa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e0aa9a5d7c348860e883f318afbf1c8b13bc316c48035c5640cd191e2c859b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1021cb93b46a27d56390396b008ed9078e782f1fe37e7f40a6e61dc0376f8f7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db57cac2495c6e1a59763cba1f37ec601bc54e415cfbc2ed0df84eeec62ee9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbcffef3b22cd37bdf624fa42fcdfc098dac75d615b2ada965eb7cb5807a39e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a6cc0f29e5d1ce42baa33374785915c5cc3dbea536b63be77367e7c900dc3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51910ec03847ee6955b00abc3d2dd0340266bdb4f793e385dcd787cd9a88023. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8f5dd47ed4c4162f31448624348c41f90557cc96110d2392db2dc8f76c8b1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1400645.
Live Cuts (Live at Teragram Ballroom and the Independent, Dec. 2015)
Quinceñera (Live at Teragram Ballroom 12.18.15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958768d6bc6c53288b8fde96e05361699cc06a9fbb09aaee93a8334988eed864. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USATO1600747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc5264676fb82ff0eab8dac0a7be01498f4249d280cd39b0e7b916579974e25. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2010377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b93637b58a27aada0c2df250199a2a2583f04a6e70e72129d3b01ce6c56f45d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2010440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e4cd2df2a04323c99264bbb1689956d76a0a0a7b2bd3df11d1008dd4b05e2a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2010451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac794ef0ce7becae6432e7ecc8f769c7337281ad6e5d04736eaf76d5a5762a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2010465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d661854560b356ca4c922c891ae56aa3ae37d870d70f6be5d27be4b3397c96. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2010469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd348cb8fbe4bdf59cc720018a7a5bb78338facb02ae864989e799b28adab1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc19f1bbdf56fb54f580e3d9f7630a8fe163f381cc6a6b188354c0f2f3cde4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348756724f81a2a784b90b6d191bf1e720bfaf2ade2281c1829bf0cce4581919. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca6bec53ea53b0ecb97a8760de8d9a4508c58172e774c257d7fa0b214426e73. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e22f476372d33ad88be28546c0938e8d121ca2f454dd7924ec874d92092fe. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8920aea5ba7224d0b9a38b3bcfe6242ae766dbde8f7de551082695f840c34e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a06c132986334fafd5d6ab3d743fc6fd0b3d0c9acd94f175fa140f00d9a17f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1babfd10ca7115e171826c0e5e1c52c42e81975c65cb7e64372841ab1994e136. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ca1241155cfc9a38c2f9f40467aa50a8bded87e308664a87eafe08bd2670a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a66b2f29317b9352aecd687bac253e4e5c9f09798d24d2e0d6d468d72c7d67. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEW2007651.